Help deciding which TT

"Your sub is to loud, turn the volume down."

Your probably on to something there. I have it set where I like it for digital sources. I can decrease the volume on the AUX input so I'm going to play with that.

The wall shelf I purchase is not the Rega brand one with the cups that line up with the feet. That shelf wouldn't work for me due to how it's built with the bracing. With the shelf I have now, I was able to slide my buffet directly under the table. I did try a lightweight bamboo cutting board before the maple slab. The maple slab seemed to reduce the flapping better.

I'm at the point where I feel like I have three options.

1) Purchase a new TT (one of the tables I mentioned in the original post). I probably going to do that anyway. I purchased the RP1 to see if Vinyl was something I wanted to get into, and now I have over 500 LPs. I'm here to stay.

2) Pickup a Phono preamp w/subsonic filter, or purchase a KAB RF1. The RF1 just seems expensive at $179 when I can pickup a Pro-Ject Phono Box DS for a little more money. I'd Consider the Cabridge Audio 651P as well, but I don't know the specs of it's subsonic filter (where it starts to filter and how steep of a slope).

3) Forget using the subwoofer with Vinyl. It might come down to this in the end.

"2) Pickup a Phono preamp w/subsonic filter, or purchase a KAB RF1. The RF1 just seems expensive at $179 when I can pickup a Pro-Ject Phono Box DS for a little more money. I'd Consider the Cabridge Audio 651P as well, but I don't know the specs of it's subsonic filter (where it starts to filter and how steep of a slope)."

I believe your sub already has one. Use it to block the lowest frequencies. It will probably take some experimenting to find the right setting.

Jeff, even with loudspeakers that have an early bass rolloff (bookshelves, electrostats etc), Users generally feel the use of an external sub-woofer is unhelpful when it comes to music.
Sensibly applied it is, however, possible.

My Martin Logan Vantages feature a 200W powered integral sub-woofer which operates from below 34Hz up to 400Hz. In order to integrate the sub properly with the room and the panel I deliberately attenuate the bass by -4.5db before it starts to appear seamless. (This despite the speakers being 4.5ft from the walls)

I find less is more in this case.
For me it isn't just a matter of overcoming feedback but aiming for a balance in which the lowest octaves don't overwhelm the room in an audibly unnatural way?

A quick update. I had the stylus sitting on a stationary record, and turned the volume up to the point where the subwoofer started to slightly pump and the sound (low level rumble) was just audible. I gently put my hands under each side and exerted a slight lift upwards. The rumble went away. I didn't have the TT completely lifted off the maple shelf, but I was in essence making the TT lighter.

Now all I need to do is create an forced air cushion that would suspend a TT in the air. Or a device that modifies the higgs field around the TT to lower it's mass.

Seems a better built TT might be an easier option? :)

You moved the T/T while the stylus was down on a stationary platter? Danger Will Robinson!! ;^)
Your wife should have warned you to tape the platter first before engaging in these shenanigans ;^)
You need a personal Force-Field to prevent you accessing your turntable. :)

Joking aside, not exactly air. It was supported by you while your feet were on the floor. Effectively 2 forms of support in parallel, you plus the rubber feet on the maple block, one(you) more massive than the other.
In theory this should have been worse!
I'm wondering if your stylus bounced up in the air slightly while you were lifting????